"Then do let's go home now," Horace said.
She stood looking round her, searching the Park with her eyes.
"I suppose we must," she said slowly. Then she added, "We can come here again to-morrow."
Horace was puzzled.
"What for? Why should we?" he asked.
But his mother made no reply, and they walked home.
Next day she insisted on going again to the same place, and again she was obviously on the look-out. Horace grew more and more puzzled by her demeanour. And when the third day came, and once more Mrs. Errington called him to set forth to the Serpentine, he said to her, with a boy's bluntness——
"D'you want to meet someone there?"
Mrs. Errington looked at him strangely.
"Yes," she said, after a minute's silence.